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Google圖書搜尋
The Availability of the Soil Potash in Clay and Clay Loam Soils
Fred Winslow Morse
Bert E. Curry
出版
New Hampshire Agricultural Experiment Station, New Hampshire College of Agriculture and the Mechanic Arts
, 1909
URL
http://books.google.com.hk/books?id=ZCYrAQAAMAAJ&hl=&source=gbs_api